AX synth MIDI

Yes, it's possible to control a VSTi using your AX. Track selection is more tricky, you can assign each track to a MIDI channel. Then, you can change the MIDI channel on the keytar to control a different track.

yup, This is how I have my live-setup configured. I use a Roland Ax-7 keytar with a Midijet Pro wirless MIDI transmitter. This goes into my Tascam 1800 MIDI interface into my laptop. I run REAPER as my live DAW, and have each track set up on a different MIDI channel. I use various VST's for my sounds, so I just use the 'up/down' patch select on the keyboard to control which MIDI channel the DAW receives.

It took a bit of effort to configure, but I know there are several ways of routing the inputs, so it's a rather expandable option.

-Tuomas Easton
The Keytar Guy
http://www.tuomaseaston.com
http://www.youtube.com/user/TuomasEastonOfficial/videos